MP3312L － 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER
MP3312L Rev. 1.0 www.MonolithicPower.com 8
8/11/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
A1 ISET
Full scale LED current set. Connecting a resistor between ISET and GND sets the full
scale current.
A2 LED2
LED2 current sink.
A3 LED1
LED1 current sink.
B1 PWM
PWM signal input. A 5kHz to 100kHz PWM signal is recommended for PWM for analog
current dimming. Low logic for >20ms shuts down the IC.
B2 COMP
Internal error amplifier output . Connect a capacitor to compensate the system.
B3 GND
Ground.
C1 EN
Enable and 1-wire input. Logic high enables the IC, and low logic >2.5ms shuts down the
IC.
C2 VIN
Power supply input. Connect a ceramic capacitor close to VIN to bypass the IC.
C3 SW
Drain connection of the internal N-channel power MOSFET.
